The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the 'fields' parameter in all versions up to, and including, 1.6.10.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, including usernames, email addresses, and password hashes.

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Fixes

Solution

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Workaround

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History

Fri, 20 Mar 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Croixhaug
Croixhaug appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Wordpress
Wordpress wordpress
Vendors & Products Croixhaug
Croixhaug appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Wordpress
Wordpress wordpress

Thu, 19 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 19 Mar 2026 11:30:00 +0000

Type Values Removed Values Added
Description The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the 'fields' parameter in all versions up to, and including, 1.6.10.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, including usernames, email addresses, and password hashes.
Title Appointment Booking Calendar <= 1.6.10.0 - Unauthenticated SQL Injection via 'fields' Parameter
Weaknesses CWE-89
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-03-19T16:05:21.373Z

Reserved: 2026-03-06T19:11:49.990Z

Link: CVE-2026-3658

cve-icon Vulnrichment

Updated: 2026-03-19T16:05:17.303Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-19T12:16:18.807

Modified: 2026-03-19T13:25:00.570

Link: CVE-2026-3658

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-20T14:15:05Z

Weaknesses